Impact of crude protein intake in last 14 days of pregnancy on puerperium, piglet loss prior to weaning and subsequent reproduction of sows
2007
Tydlitat, D.,Sevaron Consulting Ltd., Brno (Czech Republic) | Vinkler, A.,Veterinarni a Farmaceuticka Univ., Brno (Czech Republic). Klinika Chorob Prasat | Czanderlova, L.,Sevaron Consulting Ltd., Brno (Czech Republic)
The aim of this study was to evaluate the impact of feed containing 13%, 15%, 18% and 21% of crude protein fed to 4 groups of sows (A, B, C and D, respectively) from Day 100 of pregnancy until farrowing on the following traits: puerperium disorders, piglet loss prior weaning, fat depot differences, onset of reproductive activities after weaning, subsequent mating and progesterone concentrations. There were no puerperium disorders in groups A and B. Piglet loss before weaning reached 16.12 and 18.04%, resp., 90% of sows became pregnant after the 1st insemination. In groups C and D the loss of piglets before weaning was 24.86 and 28.91%, resp. These values were significantly higher than those in groups A and B. Significant differences were also found between the two types of groups (A and B vs. C and D) in the number of animals with body temperature exceeding 39.6 deg C. Puerperium disorders and MMA syndrome were detected in 50% of the C sows and in 80% of the D sows. The conception rate after the 1st insemination was 80% (group C) and 60% (group D). The reduction of backfat thickness as well as the onset of heat did not differ significantly between the two types of groups. Significant differences were found between groups A and D in progesterone concentrations on Day 14 after weaning. We demonstrated a negative impact of high crude protein intake during the last 14 days of pregnancy on puerperium in sows and on piglet loss prior to weaning.
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